Unit 3569: Network System Administration

1. Introduction to Network System Administration

• Overview of network system administration
• Roles and responsibilities of network administrators
• Importance of maintaining a well-functioning network system

2. Network Topologies and Protocols

2.1 Network Topologies

• Star topology
• Bus topology
• Ring topology
• Hybrid topologies
• Advantages and disadvantages of each topology

2.2 Networking Protocols

• TCP/IP suite overview
• Domain Name System (DNS)
• Dynamic Host Configuration Protocol (DHCP)
• Address Resolution Protocol (ARP)
• Other common protocols (HTTP, FTP, SMTP)

3. IP Addressing and Subnetting

• Basics of IP addressing (IPv4 and IPv6)
• Structure of IP addresses
• Public vs private IP addresses
• Introduction to subnet masks
• Concept and calculation of subnetting
• Designing and implementing IP addressing schemes
• Variable Length Subnet Masking (VLSM)

4. Network Security Fundamentals

• Importance of network security
• Authentication methods (passwords, biometrics, multi-factor authentication)
• Encryption techniques and protocols (SSL/TLS, IPsec)
• Firewalls: types and configuration basics
• Virtual Private Networks (VPNs)
• Intrusion Detection Systems (IDS) and Intrusion Prevention Systems (IPS)
• Best practices for securing network infrastructure

5. Network Devices and Services

5.1 Network Devices

• Routers: functions and configuration basics
• Switches: Layer 2 and Layer 3 switching
• Firewalls: hardware vs software firewalls
• Servers: roles in network environments

5.2 Essential Network Services

• DNS: function and setup
• DHCP: role and configuration
• Network Address Translation (NAT): purpose and implementation

6. Network Troubleshooting and Diagnostic Tools

• Troubleshooting methodologies and systematic approach
• Common network issues and symptoms
• Diagnostic tools:
  • Ping
  • Traceroute
  • Nslookup
  • Ipconfig/ifconfig
  • Network analyzers (Wireshark)
  • Performance monitoring tools
• Documenting issues and resolutions

7. Network Backup and Recovery Strategies

• Importance of data backup and recovery planning
• Types of backups: full, incremental, differential
• Disaster recovery planning
• Backup solutions and tools
• Ensuring data integrity and business continuity

8. Virtualization and Cloud Computing in Network Administration

• Concepts of virtualization
• Virtual network configurations
• Cloud computing overview
• Cloud deployment models: public, private, hybrid
• Cloud management tools and platforms
• Benefits and challenges of virtualization and cloud in network administration

9. Network Monitoring and Performance Optimization

• Importance of network monitoring
• Key performance metrics: bandwidth, latency, packet loss, throughput
• Network monitoring tools and software
• Strategies for performance optimization
• Bandwidth management and Quality of Service (QoS)
• Scalability planning